CVE-2026-102673
An untrusted iframe using the allow-scripts allow-popups configuration could therefore open a popup with the embedding application's full origin, exposing that origin's cookies, storage, and same-origin scripting capabilities.
Does this matter?
Lower severity and a low EPSS score (0.13%). Track it; it rarely justifies an emergency change on its own.
Description
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 41.10.4, 42.5.2, and 43.0.0, popups opened from a sandboxed iframe through Electron's OpenURLFromTab navigation path, including links using target="_blank" or a middle-click, did not receive the inherited HTML sandbox restrictions. An untrusted iframe using the allow-scripts allow-popups configuration could therefore open a popup with the embedding application's full origin, exposing that origin's cookies, storage, and same-origin scripting capabilities. Applications that do not embed untrusted content in sandboxed iframes are not affected. This issue is fixed in versions 41.10.4, 42.5.2, and 43.0.0.
- CVSS 3.1
- 6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 0.13% probability · 3th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-346, CWE-693
- Affected
- electronjs/electron
- Source
- security-advisories@github.com
EPSS moved from 0.1% on 30 September 2026 to 0.1% on 26 October 2026.
References
- https://github.com/electron/electron/commit/7ea14d5f55ecb11a30447701ddca16b3feee0bbaPatch
- https://github.com/electron/electron/commit/e26b2640e7795c42bfb111b76009cbb4327c9a69Patch
- https://github.com/electron/electron/commit/ebe1165ee2b05c203c26dd2244ef1c5b9b1c04daPatch
- https://github.com/electron/electron/pull/52133Issue Tracking, Patch
- https://github.com/electron/electron/releases/tag/v41.10.4Issue Tracking, Patch
- https://github.com/electron/electron/releases/tag/v42.5.2Release Notes
- https://github.com/electron/electron/releases/tag/v43.0.0Release Notes
- https://github.com/electron/electron/security/advisories/GHSA-hq2x-r82h-9wj4Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.